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  • Title: Clear cell neoplasms and pseudoneoplastic lesions of the central nervous system.
    Author: Gökden M, Roth KA, Carroll SL, Wick MR, Schmidt RE.
    Journal: Semin Diagn Pathol; 1997 Nov; 14(4):253-69. PubMed ID: 9383825.
    Abstract:
    Mass lesions of the central nervous system (CNS) that may assume a clear cell appearance are diverse in nature. Primary conditions in this category include oligodendroglioma, hemangioblastoma, germinoma (seminoma), clear cell and chordoid meningioma, pleomorphic xanthoastrocytoma, and lipid-rich glioblastoma. These proliferations usually can be identified by attention to clinical presentation, topographic location, radiographic details, and histological nuances. Occasionally, however, electron microscopy or immunohistological analysis may be necessary. A recommended panel of reagents for the evaluation of clear cell primary CNS lesions include antibodies to glial fibrillary acidic proteins, S-100 protein, epithelial membrane antigen, vimentin, keratins, placental-like alkaline phosphatase, and synaptophysin. This article reviews the salient clinicopathologic attributes of such proliferations, elaborates a practical approach to their diagnosis, and discusses important differential diagnostic considerations. The latter include malformative lesions, infarcts, inflammatory conditions, and secondary lymphomas, carcinomas, and melanomas.
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